Microsoft SharePoint Enterprise Server 2016 allows an elevation of privilege vulnerability to due how specially crafted web requests are sa…

published 2018-03-14 8y ago modified 2026-06-17 4mo ago also EUVD-2018-1712

cvss: 8.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 4.5%; EPSS 4.5% chance of exploitation in 30 days, percentile 91%
public exploits: 0; none known

Microsoft SharePoint Enterprise Server 2016 allows an elevation of privilege vulnerability to due how specially crafted web requests are sanitized, aka "Microsoft SharePoint Elevation of Privilege Vulnerability". This CVE is unique from CVE-2018-0909, CVE-2018-0910. CVE-2018-0911, CVE-2018-0912, CVE-2018-0913 CVE-2018-0914, CVE-2018-0915, CVE-2018-0916, CVE-2018-0917, CVE-2018-0923, CVE-2018-0944 and CVE-2018-0947.

Patch / fix

links 1

portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0921 advisory

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Exploit prediction

4.53% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.0	8.8	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

Microsoft Corporation Microsoft SharePoint

Classification

Weakness

CWE-79 Improper Neutralization of Input During Web Page Generation

References

portal.msrc.microsoft.com /en-US/security-guidance/advisory/CVE-2018-0921
patch, vendor-advisory
securitytracker.com /id/1040513
vdb-entry, third-party-advisory
securityfocus.com /bid/103302
vdb-entry, third-party-advisory

Sources

CVE List CVE-2018-0921
NVD CVE-2018-0921

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